Disk-sharpener



W. R. HEGGS.

DISK SHARPENER.

APPLICATION FILED nic. ls. 1919.

wiuiamR. Hegg E woe/vwo@ WILLIAM RHEGGS, OF MERINO, COLORADO.

DISK-SHARPENER.

Application led December 191 1919.

To all whom t may concern:

Be it known that I, WILLIAM R. Haces, a citizen of the United States, residing at Merino, in the county of Logan and State of Colorado, have invented certain new and useful Improvements in Disk-Sharpeners, of which the following is a specification.

This invention relates to disk Sharpeners,

land the primary object of the invention is to provide an improved means for sharpening the blades of a disk harrow, while the harrow is in use.

Another object of the invention is the provision of an improved sharpener for the disk of a harrow,rwhich is so constructed as to permit the same to be readily attached to harrow frames of different widths, and having means for engaging any one of said disks, so as to sharpen the same.

A further object of the invention is the provision of an improved sharpener for the disks of a disk harrow carried by the frame of the hai-row and capable of being adjusted to any position transversely of the frame and at any angle to conform to the angle in which the disks are set.

A still further object of the invention is the provision of an improved means for holding the Sharpeners in engagement with the disks so as to permit a resilient connection between the same and thereby allowing the sharpener to swing in relation to the disk so as not to interfere with the operation of the disk and sharpener when the harrow is operating over rough ground.

A still further-object of the invention is the provision of an improved disk sharpener for harrows embodying a bar arranged transversely of the frame of the harrow and having sharpening means adjustably mounted thereon for successively engaging the disks and having means carried by the sharpener for engaging the disks in advance of the sharpening elements so as to remove all the debris from'the disk prior "to action of the sharpener thereon.

A still further object of the invention is the provision of an improved disk sharpener of the above character which is durable and eficient in use, one that is simple and easy to manufacture, and one which can be used in connection with any type of disk harrow.

Other objects of the invention will appear in the following detailed description taken in connection with the accompanying draw- Specication of Letters Patent.

gaging element D and the clamp Patented Julie 29, 1920.

serial No. 346,011.

ings, forming a part of this specification,

and in which drawings:

' Figure 1 is a plan view of a disk harrow showing the improved sharpener applied thereto and in operative position. A l Fig. 2 is an enlarged detail perspective View of the improved sharpener removed from `the harrow, -certain of the scraper i blades being shown broken away.

Fig. 3 is a longitudinal section through the improved disk sharpener. n

Fig.v 4c is an enlarged fragmentary horizontal longitudinal section through the disk sharpener, the scraper blades being shown insection.

Fig; 5 is a transverse section taken on the line 5 5 of Fig. 3.

Fig. 6 is a detail transverse section taken on the line (3*6 of Fig. 3.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter A indicates a disk harrow of the ordinary or any preferred construction having the improved disk sharpener B associated therewith. The disk sharpener B includes the supporting member (l for the adjustable disk sharpening en- E for engaging the frameof the harrowv for holdngthe supporting member in proper position. f

The harrow A includes the usual gangs 10 and 11, which are connected in the usual or any preferred manner to the frame 12, which includes the spaced beams for each gang. l

The supporting member C of the disk sharpener includes a vrelatively long narrow bar 14-, which is adapted to extend transversely across the frame of the harrow in parallel relation to one of the gangs 10 or 11, and the lower surface of the beam or bar 14 is provided with a reduced dove tailed extension 15 on which are slidably mounted the fasteners E which will be hereinafter more fully described. The dove tailed extension 15 defines overhanging flanges 16 on the bar or beam 14, and-these flanges are adapted to slidably receive the guide 17 carrying the disk sharpening element D. The guide 17 is substantially U-shaped in cross section and is provided with inwardly extending lips 18 which are adapted to engage on the surface of the flanges 16, thereby preventing any relative lateral movement of the guides in relation to the beam or bar 14. The element D for sharpening the disk includes a relatively thick substantially rectangular-shaped body 19, which is arranged on the upper surface of the guide 17 and is provided at its opposite edges with relatively thin guide iianges 20, which are provided with arcuate guide ways 21 for the reception of a screw and thumb nut 22 carried by the upper surface of the bar 14 adjacent to the terminals thereof, and the set screws 22 form means for holding the block or body 19 in its adjusted position, when the same is swung on its pivot bolt 23 which extend centrally through the body or block 19 and is carried by the guide 17.

The side faces of the body block adjacent to the ends thereof are provided with inwardly extending slots 24, which are gradually widened toward their outer ends and mounted on each side of the block in the slots 24 is a pair of arms 25. The inner terminals of the arms are mounted on pivot pins 26, so as to allow a limited movement of the arms in the slots. The outer termi nals of the arms 25 extend outwardly of the slots and are curved arcuately toward each other, as at 27, and are provided with slotted inner faces 2S for the reception of the files 29. The files 29 arranged on one side of the body or block 19 are of a different iinish from the files arranged on the opposite side, so that one set can be used for heavy work, and the other for the light or finishing work. Mounted in the slotted faces 23 are the arcuate spring scraper blades 30', which are adapted to engage the disks of the gangs 10 and 11 in advance of the files so as to effectively clean the blades before the files come in contact therewith.

rlhe files are held in contact with the disks by means of expansion springs 30, which are seated in seats 31` forwardly of the pivot pin 2G. The tensionv of the springs f 30 are adapted to be adjusted by suitable thumb screws 32 so that the desired tension of the files or the disks may be obtained.

The files may be brought into engagement with any disk desired by sliding the guide 17 on the bar 14, and when the guide reaches the desired position on the bar, the same is held against accidental displacement by a suitable thumb screw 33 which is adapted to bite into the side face of the bar. When the disks are arranged at an angle it is merely necessary to swing the block 19 of the pivot pin 23 and adjust the wing nuts 22 so as to engage the flanges 20, so as to hold the blocks against movement. The clamps E for engaging the beams 13 of the frame of the disk harrow consists of slidable guides 34, which are mounted on the dove tailed extension 16 formed on the bar 14, and the guides carry depending angle braekets 35 which are adapted to engage the lower surface of the beams 13. A companion angle bracket 36 is bolted or otherwise secured to the bracket 35 and is adapted to engage the upper surface of the beams 13. The brackets are held in adjusted position in engagement with the beams by suitable adjustable bolts 37. The guides 34 carry adjustable set screws 38 for engaging the dove tailed extension so as to permit the guides to be held in any desired adjusted position.

In operation of the improved device, `the guides 34 are moved to the desired position on the bar 14, so as to permit the same to engage the beams 13 and the thumb screw 3S and the bolts 37 are tightened. The guide 17 is then slid longitudinally on the bar 14 and one of the files 29 on one side of the bar is brought into engagement with one face of the disk to be sharpened. After one face of the disk has been sharpened, the guide 17 is slid in the desired direction to swing the other file on the same side of the bar into engagement with the opposite side of the disk. After all Vof the disks have been sharpened, the position of the bar 14 may be reversed so as tobring the other set of files into operative relation with the disk and permita sharpened finish to be made on the disk.

From the foregoing description, it can be seen that an improved Sharpener for disk harrows is provided, which can be readily and quickly attached to any size harrow frame, and brought into contact with any one of the disks for sharpening the same while the disk is in operation in the field.

Changes in details may be made Without departing from the spirit or scope of my invention: but,

I claim:

1. The combination with a harrow including a frame, and a gang of disks, of an attachment therefor including a bar arranged in spaced parallel relation to the gang of disks, adjustable clamps carried by the bar for engaging 4the frame, a block carried by the bar and adjustable longitudinally on the frame, sharpening elements carried by the opposite ends of the block and arranged to engage the opposite faces of any one of the disks, and spring means carried by the block and arranged to engage the sharpening elements toI hold the same in engagement with the disk.

2. The combination with a harrow including a frame, and a gang of disks, of an attachment therefor including a bar arranged in spaced parallel relation to the disks, means for holding the bar in operative position on the frame, a block pivotally car ried by the bar, sharpening elements carl ried by the block and arranged on opposite sides of the pivot means for movement into and out of engagement with the disk, and

means for holding the block in any adjusted position on the pivot means.

3. The combination with a harroW including a frame, and a gang of disks, of an attachment therefor including a bar, means carried by the bar for engaging the frame, a block adjustably carried by the bar, means for holding the block in adjusted position on the bar, arms pivotally carried by the block, the outer ends of the arms being curved inwardly toward each other, tiles carried by the inturned terminals of the arms, and springs carried by the blocks arranged to engage the arms for holding the files in engagement with the disks.

, sharpeners Will be moved out of engagement with the disk.

5. The combination of a harrou7 includ.

ing a frame and a gang of disks, of an attachment thereior including a bar, means for securing the bar to the frame, and differ:`

'ent grades of sharpening files carried by the opposite sides of the bar.

6. The combination of a harroW including a frame and a gang of disks, of an attachy ment thereforl including a bar, means earried by the bark for engaging the frame, a guide slidably mounted on the bar for move` ment longitudinally of the same, a'block pivotally carried by the guide, outwardly extending arms carried by the opposite faces of the block, means pivotally securing the arms into position, files carried by the terminals of the arms, and scraper blades carried by the arms arranged to engage the disks in advance of the files.

7. An attachment for disk harroWs comprising aV supporting bar having a longitudinally extending dove tailed extension formed on its lower face, lguides slidably mounted on said dove tailed extension, clamps carried by said guides, a guide slidably mounted in the upper face of the bar, a block pivotally mounted on the guides, out# Wardly extending ears formed on'the terminals of the block, said ears having an arcuate slot formed therein, a bolt carried by the guide arranged to extend through the slot, a thumb nut turned on said bolt and arranged to engage the ear, arcuately eX- tending arms pivotally carried by the block, spring means arranged to engage the arms in advance of the pivot means, and

files carried by the terminals of the arms. WILLIAM R. HEGGS. 

